【单选题】He smiled at me _____ my help, saying nothing at that moment. [ ]
【单选题】He smiled_______ me.
【简答题】He smiled, with the ____that he didn't believe me. (imply)
【单选题】I thought he would be angry with me,but _________ he smiled.
【简答题】他朝我微笑着,让人感到宽心。 He smiled at me in a way.
【单选题】可用沉淀法除去杂质 (括号内的物质是杂质)的是( )
A.
KNO 3 〔 Ca (NO 3 ) 2 〕